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Share-Based Compensation (Narrative) (Details) - shares | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2017
Performance Share Units [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Comparison period of peer companies for performance awards | 3 years |
Minimum [Member] | Restricted Stock Awards And Units [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Vesting period | 1 year |
Minimum [Member] | Performance Share Units [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Percentage of vesting units to units granted | 0.00% |
Maximum [Member] | Restricted Stock Awards And Units [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Vesting period | 4 years |
Maximum [Member] | Performance Share Units [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Percentage of vesting units to units granted | 200.00% |
2017 Plan [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Shares authorized for issuance |  | 33,500,000
Number of shares used to calculate shares that may be granted under the Long-Term Incentive Plan, options and stock appreciation rights |  | 1
Number of shares used to calculate shares that may be granted under the Long-Term Incentive Plan, other awards |  | 2.3

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- Definition Number Of Shares Used To Calculate Shares That May Be Granted Under The Long-Term Incentive Plan, Options And Stock Appreciation Rights + References No definition available. + Details
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- Definition Number Of Shares Used To Calculate Shares That May Be Granted Under The Long-Term Incentive Plan, Other Awards + References No definition available. + Details
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- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Number of shares authorized for issuance under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Percentage of vesting of award under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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